Patti Smith brought down the house at Carnegie Hall on Thursday, despite having the flu. Smith’s daughter Jessie, who also performed at the concert for Tibet House, told us her singing-icon mother “got home from Toronto” the day of the show, “and got under the covers . . . and was just sneezing and coughing. We [thought], ‘She’s not going to be able to do this.’ We were planning that she wouldn’t come at all . . . then she showed up and went on and did such a good job, and nobody knew.” Composer Philip Glass told us, “I was backstage with her, and she was out of it. I said we don’t have to rehearse it; we know the piece. She’s a real performer . . . at that moment she was able to do everything.” Also at the benefit were NPR host (and Glass’ cousin) Ira and Robert Thurman, the Buddhist scholar (and father of »»Uma, who was in the audience). Thurman paid tribute to late rapper Adam Yauch, saying, “In Tibet tradition you don’t really worry about somebody . . . they go on forever, and we hope there will be a new batch of Beastie Boys in another decade or two.”